我尝试计算两个 HTML 时间输入元素之间的差异。当其中一个时间改变时，就必须重新计算，不幸的是我不能为彼此这样做。谁能帮我？
<input type="time" id="start" value="10:00" >
<input type="time" id="end" value="12:30" >
<input id="diff">
<script>
var start = document.getElementById("start").value;
var end = document.getElementById("end").value;
document.getElementById("start").onchange = function() {diff(start,end)};
document.getElementById("end").onchange = function() {diff(start,end)};
function diff(start, end) {
start = start.split(":");
end = end.split(":");
var startDate = new Date(0, 0, 0, start[0], start[1], 0);
var endDate = new Date(0, 0, 0, end[0], end[1], 0);
var diff = endDate.getTime() - startDate.getTime();
var hours = Math.floor(diff / 1000 / 60 / 60);
diff -= hours * 1000 * 60 * 60;
var minutes = Math.floor(diff / 1000 / 60);
return (hours < 9 ? "0" : "") + hours + ":" + (minutes < 9 ? "0" : "") + minutes;
}
document.getElementById("diff").value = diff(start, end);
</script>
这个时差码厉害了！因此，如果您需要的只是让它自行更新，我会为您复制并稍微修改一下您的代码。再说一次，你的代码太棒了:)
<input type="time" id="start" value="10:00" >
<input type="time" id="end" value="12:30" >
<input id="diff">
<script>
var start = document.getElementById("start").value;
var end = document.getElementById("end").value;
document.getElementById("start").onchange = function() {diff(start,end)};
document.getElementById("end").onchange = function() {diff(start,end)};
function diff(start, end) {
start = document.getElementById("start").value; //to update time value in each input bar
end = document.getElementById("end").value; //to update time value in each input bar
start = start.split(":");
end = end.split(":");
var startDate = new Date(0, 0, 0, start[0], start[1], 0);
var endDate = new Date(0, 0, 0, end[0], end[1], 0);
var diff = endDate.getTime() - startDate.getTime();
var hours = Math.floor(diff / 1000 / 60 / 60);
diff -= hours * 1000 * 60 * 60;
var minutes = Math.floor(diff / 1000 / 60);
return (hours < 9 ? "0" : "") + hours + ":" + (minutes < 9 ? "0" : "") + minutes;
}
setInterval(function(){document.getElementById("diff").value = diff(start, end);}, 1000); //to update time every second (1000 is 1 sec interval and function encasing original code you had down here is because setInterval only reads functions) You can change how fast the time updates by lowering the time interval
</script>
这是您想要的吗？如果不是，请告诉我，我很乐意帮助您完成这段出色的代码:)
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